CN110649971A - Visible light generation and communication method and device and visible light communication system - Google Patents
Visible light generation and communication method and device and visible light communication system Download PDFInfo
- Publication number
- CN110649971A CN110649971A CN201910937529.9A CN201910937529A CN110649971A CN 110649971 A CN110649971 A CN 110649971A CN 201910937529 A CN201910937529 A CN 201910937529A CN 110649971 A CN110649971 A CN 110649971A
- Authority
- CN
- China
- Prior art keywords
- visible light
- signal
- data
- modulation
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/08—Constructional details, e.g. cabinet
- H04B1/082—Constructional details, e.g. cabinet to be used in vehicles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
Abstract
The application discloses a visible light generation method, a visible light communication device and a visible light communication system. The visible light generating device includes: a first optical signal conversion unit for converting a first visible light signal and a second visible light signal into a first electrical signal, the first visible light signal being transmitted through a visible light communication device of the visible light generation device, the second visible light signal being transmitted by another visible light generation device adjacent to the visible light generation device; the first modulation unit is used for generating a first part of modulation data according to the first electric signal and combining the first part of modulation data and a second part of modulation data stored in advance to generate a modulation signal; and the first visible light generating unit is used for generating a third visible light signal according to the driving of the modulation signal. The embodiment of the application transmits the road traffic sign information and the real-time data of the road condition by generating the visible light signal, thereby effectively reducing and avoiding the occurrence of traffic accidents.
Description
Technical Field
The present application relates generally to the field of communication technologies, and in particular, to visible light generation, communication methods and apparatuses, and a visible light communication system.
Background
When a vehicle is driven to dangerous places such as sharp turns, intersections and the like, a traffic department door is usually provided with a traffic sign board to warn road conditions so as to prevent traffic accidents. And dangerous road section prompting data is pre-imported into the navigation data to prompt a driver to improve the alertness in the dangerous road section. The traffic billboard cannot effectively prompt in time due to the influence of extreme weather or human factors and the like, and navigation data cannot guide drivers in time in scenes with weak signals.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a visible light generating device, a visible light communication method and device, and a visible light communication system, which effectively reduce or avoid the occurrence of traffic accidents.
In a first aspect, an embodiment of the present application provides a visible light generating apparatus, which includes:
a first optical signal conversion unit for converting a first visible light signal and a second visible light signal into a first electrical signal, the first visible light signal being transmitted through a visible light communication device of the visible light generation device, the second visible light signal being transmitted by another visible light generation device adjacent to the visible light generation device;
the first modulation unit is used for generating a first part of modulation data according to the first electric signal and combining the first part of modulation data and a second part of modulation data stored in advance to generate a modulation signal;
and the first visible light generating unit is used for generating a third visible light signal according to the driving of the modulation signal.
In a second aspect, an embodiment of the present application provides a visible light communication apparatus, where the visible light communication apparatus is used for an in-vehicle device, and the apparatus at least includes:
an optical signal receiving unit for receiving a third visible light signal generated by the visible light generating device described in the first aspect;
a second optical signal conversion unit for converting the third visible light signal into a second electrical signal;
and the processing unit is used for analyzing the second electric signal to generate prompt data, and the prompt data is used for prompting a driver of the vehicle-mounted equipment.
In a third aspect, an embodiment of the present application provides a visible light communication system, including:
a visible light generating device as described in the first aspect;
a visible light communication device as described in the second aspect.
In a fourth aspect, an embodiment of the present application provides a visible light generating method, including:
receiving a first visible light signal sent by the vehicle-mounted equipment of the current visible light generating device and a second visible light signal sent by other visible light generating devices adjacent to the current visible light generating device;
converting the first visible light signal and the second visible light signal into a first electrical signal;
generating a first part of modulation data according to the first electric signal, and combining the first part of modulation data and a second part of modulation data stored in advance to generate a modulation signal;
and generating a third visible light signal according to the modulation signal drive.
In a fifth aspect, an embodiment of the present application provides a visible light communication method, where the method at least includes:
receiving a third visible light signal generated by the visible light generating device as described in the first aspect;
converting the third visible light signal into a second electrical signal;
the second electrical signal is interpreted to generate prompt data for prompting a driver of the vehicle-mounted device.
In a sixth aspect, an embodiment of the present application provides a visible light communication method, where the method includes:
the visible light generating device receives a first visible light signal sent by a visible light communication device passing through the visible light generating device and a second visible light signal sent by other adjacent visible light generating devices, converts the first visible light signal and the second visible light signal into a first electric signal, generates a first part of modulation data according to the first electric signal, and combines the first part of modulation data and a second part of modulation data stored in advance to generate a modulation signal; and driving to generate a third visible light signal according to the modulation signal;
the visible light communication device receives the third visible light signal, converts the third visible light signal into a second electric signal, and analyzes the second electric signal to generate prompt data, wherein the prompt data is used for prompting a driver of the vehicle-mounted equipment.
According to the visible light generating and communicating method and device and the visible light communication system, the visible light signal is generated according to the first visible light signal sent by the visible light communication device passing through the visible light generating device and the second visible light signal sent by other visible light generating devices adjacent to the visible light generating device, and the visible light signal is utilized to transmit road traffic sign information and real-time road condition data, so that traffic accidents are effectively reduced and avoided.
Furthermore, the application also provides an efficient visible light signal format, so that the road condition early warning efficiency is effectively improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic view illustrating a scene of a visible light communication system provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a visible light generating apparatus 10 provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a visible light communication device 20 according to another embodiment of the present application;
FIG. 4 is a schematic diagram illustrating a format of a visible light signal provided by an embodiment of the present application;
fig. 5 is a schematic structural diagram of a visible light communication system provided by an embodiment of the present application;
FIG. 6 illustrates a visible light generation method provided by an embodiment of the present application;
fig. 7 is a flowchart illustrating a visible light communication method provided by an embodiment of the present application;
fig. 8 shows a flowchart of a visible light communication method provided in an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant disclosure and are not limiting of the disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In the driving process, a driver can improve the safe driving consciousness by noticing the roadside warning board (or called as a traffic sign board) so as to avoid traffic accidents. Among them, dangerous warning boards, such as geological disaster prone areas (mountain landslide), high voltage transmission and distribution circuits (careful electric shock), traffic road conditions (sharp turns, schools, ramps, bridges, single file), etc., these road traffic signs are mainly used to inform drivers or pedestrians that the road in front of the road is dangerous. However, these dangerous warning boards may not effectively play a role of warning before the vehicle travels to a dangerous road or during the night driving due to human factors or extreme weather, so that accidents in dangerous places still frequently occur, which causes adverse effects.
In order to effectively solve the potential safety hazard problem, the application provides a method and a device for transmitting traffic information by using visible light.
Referring to fig. 1, fig. 1 is a schematic view illustrating a scene of a visible light communication system according to an embodiment of the present application.
As shown in FIG. 1, a plurality of visible light generating devices 10 (10 as shown) are positioned along a pathway-1，10-7，10-n). For example, the visible light generating devices 10 may be installed on both sides of an expressway, a remote section, a scenic spot section, or the like. The road can be installed at equal intervals according to a fixed set distance, and the distance can be adjusted according to the specific environment of the road. For example, in a mountain road section where the change in curvature is large, the distance between two visible light generation devices 10 can be reduced, thereby increasing the laying density. The problem of poor signal of a remote road section is effectively solved.
The visible light generating device 10 may transmit a visible light signal to the visible light communication device 20 moving along the way. The visible light signal may at least include content indicating a road traffic sign, and may further include content of real-time road conditions. The visible light communication device 20 may be plural.
The visible light generating device 10 may receive the visible light signal from the visible light communication device 20, and may also receive the visible light signal from the adjacent visible light generating device 10, where the visible light signal is used to update the content of the real-time traffic status, so as to implement the update and transmission of the traffic status information by using the visible light generating device. Among them, the visible light generating device 10 may be implemented as a solar lighting device. Preferably a solar floor lamp. The visible light communication device 20 may be implemented on a moving object such as an in-vehicle device.
The structure of the visible light generation device 10 will be further described below. Referring to fig. 2, fig. 2 is a schematic structural diagram of a visible light generating apparatus 10 according to an embodiment of the present disclosure. As shown in fig. 2, the apparatus includes:
a first optical signal conversion unit 101 for converting the first visible light signal and the second visible light signal into a first electrical signal; the first visible light signal is sent by a visible light communication device of the visible light generating device, and the second visible light signal is sent by other visible light generating devices adjacent to the visible light generating device;
a first modulation unit 102, configured to generate a first part of modulation data according to the first electrical signal, and combine the first part of modulation data and a second part of modulation data stored in advance to generate a modulation signal;
and the first visible light generating unit 103 is used for generating a third visible light signal according to the driving of the modulation signal.
The visible light generating device provided by the embodiment of the application can be in two-way communication with the visible light communication device and the adjacent visible light generating device respectively, so that traffic safety information can be transmitted to the visible light communication device, and vehicle-mounted equipment provided with the visible light communication device can be prompted to pay attention to driving safety, so that traffic accidents can be effectively reduced or avoided.
In the above embodiment, the first portion of modulated data may include real-time data corresponding to the first visible light signal and alarm data corresponding to the second visible light signal. The real-time data is used for representing the current real-time motion state of the vehicle-mounted equipment, such as parameters of vehicle speed and the like. The warning data is used to indicate the current actual condition of the road, such as whether congestion occurs in front of the road, the reason for the congestion, and the like. The second part of the modulated data may include road prompting data with fixed settings, such as a road sign, a tourist area sign, an indication sign, a warning sign, a prohibition sign, and the like in the road traffic sign.
The first visible light signal is transmitted by the visible light communication device 20 passing through the current visible light generating device 10, and the first visible light signal is transmitted to the current real-time motion state of the vehicle-mounted device. For example, when the vehicle-mounted device passes through the visible light generating device 10, the visible light generating device 100 may receive a first visible light signal sent by the vehicle-mounted device, where the first visible light signal may indicate that the time for the visible light communication device 20 to travel to the visible light generating device 10 is 12:00, and the movement speed of the visible light communication device is 95 km/h.
The second visible light signal is transmitted by other visible light devices adjacent to the visible light generating device 10, and the second visible light signal is transmitted according to whether there is a special road condition in the direction in which the driving path of the vehicle-mounted device extends forward. For example, a traffic accident situation occurs at a distance of 5km from the visible light generating device 10.
The second part of the modulated data comprises road prompting data which is fixedly arranged. This part of the data is not modifiable and is preset in a modulation unit or other storage unit of the visible light generating device. The road prompting data may be, for example, a service area located 1km away from the visible light generating device 10, and the speed limit of the current traveling link may be 80 km/h.
This application embodiment, through visible light transmission road traffic sign information, this information is fixed to be set up in visible light generating device to utilize visible light communication device to give the visible light generating device with the real-time information transfer of road conditions, so that carry out the information replacement through visible light generating device, thereby make navigating mate prepare in advance before arriving dangerous district, thereby reduce accident rate, improve road traffic's security. In the embodiment of the present application, the first visible light signal, the second visible light signal, and the third visible light signal are only used for distinguishing different generation subjects.
Further, on the basis of the above embodiment, the visible light generation apparatus 10 may further include: and the solar energy conversion device is used for converting solar energy into electric energy so as to provide energy for the visible light generation device.
When the visible light communication device 20 passes through the visible light generating device 10, the visible light signal emitted by the visible light generating device 10 can be received, and the information of the road traffic sign can be obtained according to the visible light signal, so that the occurrence of traffic accidents can be effectively reduced and avoided.
In the embodiment of the present application, the visible light generating unit may be a light emitting diode light source (i.e., LED), a laser diode light source, or the like.
In the above scenario, an embodiment of the present application further provides a structure of a visible light communication device, which can be installed on a moving object to effectively provide safety prompt information for the moving object. Referring to fig. 3, fig. 3 is a schematic structural diagram of a visible light communication device 200 according to another embodiment of the present application. As shown in fig. 3, the apparatus 20 includes:
an optical signal receiving unit 201 for receiving the third visible light signal generated by the visible light generating device 10;
a second optical signal conversion unit 202 for converting the third visible light signal into a second electrical signal;
and the processing unit 203 is used for analyzing the second electric signal to read prompt data, and the prompt data is used for prompting a driver of the vehicle-mounted equipment.
The visible light communication device for the vehicle-mounted device according to the embodiment of the present application may receive a visible light signal from the visible light generation device 10, where the visible light signal is used to indicate road traffic sign information and traffic condition information of a current road. The traffic condition information of the current road can comprise historical record information of a vehicle ahead of the current vehicle-mounted device and traffic condition information occurring in front of the road where the current vehicle-mounted device runs. The processing unit may generate the cue data based on the parsing result in the process of parsing the second electrical signal, for example, the processing unit is configured to parse the second electrical signal to generate a control signal and read the cue data according to the control signal. The control signal may be set according to a communication protocol inside the in-vehicle apparatus.
On the basis of the above embodiment, the apparatus 20 may further include:
the data acquisition unit 204 is used for acquiring real-time data of the vehicle-mounted equipment;
the processing unit 203 is further configured to calculate distance data and current traffic data between the vehicle-mounted device and a previous vehicle-mounted device according to the real-time data and the real-time data corresponding to the first visible light signal in the first part of modulation data, and generate intersection judgment data according to the real-time data and the second part of modulation data; and generating prompt data according to the distance data, the current traffic flow data, the traffic rule judging data and the alarm data corresponding to the second visible light signal in the first part of modulation data. The prompting data at least comprises distance data, current traffic flow data, traffic rule judging data and alarm data.
Further, the apparatus 20 may further include an information prompting unit 205 for reading the prompting data according to the control signal. The prompt data is presented to the driver of the in-vehicle device in a multimedia manner through the information prompt unit 205. For example, after the processing unit 203 generates the prompt data according to the distance data, the current traffic data, the traffic rule judgment data, and the warning data corresponding to the second visible light signal in the first part of modulation data, the prompt data is stored in the corresponding storage medium, and meanwhile, the processing unit 203 sends a control signal to the information prompting unit 205, where the control signal is used to drive the information prompting unit 205 to read the prompt data, so that the information prompting unit 205 prompts a driver of the vehicle-mounted device in a multimedia manner.
Wherein the processing unit 203 generates the prompt data according to the third visible light signal received from the visible light generating device 10 and the collected real-time data. The real-time data may be, for example, parameters such as vehicle speed and time acquired when the vehicle-mounted device passes through the visible light generation device 10. In addition, the visible light communication device 20 mounted on the vehicle-mounted device may transmit the acquired real-time data to the visible light generation device 10 as a visible light signal.
For example, the visible light communication device 20 of the in-vehicle apparatus receives the third visible light signal transmitted from the visible light generation device 10 and analyzes the third visible light signal. The third visible light signal may be represented in accordance with the signal format shown in fig. 4. As shown in fig. 4, a first signal section 401 is used for indicating road traffic sign information, a second signal section 402 is used for indicating real-time data of a preceding vehicle, and a third signal section 403 is used for indicating road condition information. The first, second and third are used for distinguishing the signal interval representing the visible light signal.
For example, the first signal section 401 may include combination information of a disable flag and a finger flag. The information of the tourist area mark, the indication mark, the warning mark, etc. may also be included, and the content corresponding to the first signal section 401 is fixedly disposed in the visible light generating device, such as a storage unit or a modulation unit that may be disposed in the visible light generating device.
The second signal section 402 is real-time data received from the in-vehicle device passing through the visible light generation means. Which is typically updated by the visible light communication device. It is assumed that the vehicles a and B pass through the visible light generating device 10 in sequence, and the visible light communication devices are mounted on the vehicles a and B, respectively. When the vehicle a passes through the visible light generation device 10, the vehicle a receives a third visible light signal sent by the visible light generation device 10, and a second signal section 402 of the third visible light signal indicates: real-time data of other vehicles present before the vehicle a or prompt data that no vehicle has passed over a predetermined time. The latter may initialize the second signal interval 402 to 0.
If the vehicle a transmits its own real-time data to the visible light generating device 10 in the form of the first visible light signal, the second signal interval 402 is updated to be the time t1Is 12:00, vehicle speed v1Is 95 km/h.
After a period of time, the vehicle B passes through the visible light generating device 10, and the vehicle B receives the updated third visible light signal, where the second signal interval 402 in the third visible light signal indicates that: time t1Is 12:00, vehicle speed v1Is 95 km/h. Then, the vehicle B transmits its own real-time data to the visible light generating device 10 in the form of the first visible light signal, and at this time, the second signal interval 402 is updated as follows: time t2Is 12:05, vehicle speed v2Is 100 km/h. Alternatively, this may be achieved in an accumulative update, e.g. the second signal interval 402 may comprise the time t1Speed v of the vehicle195km/h, time t2Speed v of the vehicle2Is 100 km/h. A field including a vehicle identification may also be provided in the second signal section 402 to identify the time,And (6) vehicle speed.
The vehicle flow value may also be included in the second signal interval 402. For example, the second signal interval 402 may also include a time value, a vehicle speed value, and a vehicle flow value. As shown in the following table, the following,
| time value | Vehicle speed value | Vehicle flow value |
| t1 | 95km/h | 1 |
| t2 | 100km/h | 2 |
The traffic flow value is the number of the vehicle-mounted devices passing through the current visible light generating device, which is calculated cumulatively according to the statistical period. The statistical period may be, for example, 1 hour, or 30 minutes, etc.
The third signal section 403 is the traffic data received from the adjacent visible light generating device. For example, a plurality of visible light generating devices (10) are installed on the current driving road-1，…，10-n) If a traffic accident occurs in the mth visible light generating device among the plurality of visible light generating devices, the vehicle-mounted device that reaches the mth visible light generating device is the vehicle that first knows the traffic accident. The visible light communication device of the vehicle-mounted equipment recognizes that the plurality of vehicle-mounted equipment at the same position cause congestion by receiving the visible light signal sent by the mth visible light generating device(ii) a Or accident data and the like are captured by an own image acquisition device. The visible light communication device converts the data into new road condition information and sends the road condition information to the mth visible light generating device according to a preset signal format.
And when the mth visible light generating device identifies that the signal contains the updated road condition information, sending the updated road condition information to the (m + 1) th visible light generating device. And the two adjacent visible light generating devices sequentially transmit the road condition information to other visible light generating devices. The transmission direction may be transmitted to the visible light generation devices adjacent to both sides in synchronization, or may be transmitted in accordance with a road-defining travel direction, for example, in a direction opposite to the travel direction of the vehicle when traveling in one direction.
According to the embodiment of the application, the road condition early warning information is effectively improved through the format of the visible light signal. The second signal interval 402 and the second signal interval 403 may also be implemented by a unified signal interval, each signal interval being implemented by a specific field indication.
On the basis of the above embodiment, the visible light communication device 20 may parse the third visible light signal and convert the information conveyed by the third visible light signal into the prompt data. The prompt data at least comprises distance data, current traffic flow data, traffic rule judging data and alarm data. The reminder data may also include other reminder content. The prompting data can be data in a voice format, or data in an image format displayed on a front windshield, or data in different formats in a combined mode, so as to remind a driver of real-time road conditions in front of the driver. The voice format data or the image format data can be broadcasted by a multimedia device of the vehicle-mounted device or other mobile devices connected with the vehicle-mounted device. The information prompting unit can be multimedia equipment or mobile equipment software, hardware and the like.
The visible light communication device 20 provided in the embodiment of the present application may further include a second visible light generation unit, which is configured to generate the first visible light signal according to real-time data of the vehicle-mounted device. Wherein the second visible light generating unit may be independently provided at a front portion of the in-vehicle apparatus. Or combined with lighting means of the in-vehicle apparatus, such as a headlight or a backlight of the in-vehicle apparatus. The visible light generating unit may be a light emitting diode light source, a laser diode light source, or the like.
The visible light communication device provided by the embodiment of the application can be matched with the visible light generating device to dynamically prompt the content of the traffic road sign and the road condition information, so that the accident occurrence probability is effectively reduced, and the safety of road traffic is improved.
For more clearly understanding the technical solution provided by the embodiment of the present application, please refer to fig. 5, and fig. 5 shows a schematic structural diagram of a visible light communication system provided by the embodiment of the present application. The system includes a plurality of visible light generating devices 10 and a plurality of visible light communication devices 20. As shown in FIG. 5, the visible light generating device 10-1，10-2，10-3，10-4Visible light communication device 20-1，20-2。
Suppose a visible light generating apparatus 10-2Sending a visible light signal 501 to the visible light communication device 20-1The visible light signal 501 includes a service area 1km ahead, a speed limit of 100km/h and a time t1The speed is 12:00, the speed is 95km/h, the traffic flow is 30, and a traffic accident happens at the position 5km ahead.
Visible light communication device 20-1Receives a visible light signal 501 and sends a visible light signal 502 to the visible light generating device 10-2. After receiving the visible light signal 501, the visible light communication device 20-1The visible light signal 501 is converted and analyzed to obtain a service area with the front 1km, the speed is limited to 100km/h, and the time t is1At 12:00 hours, the vehicle-mounted equipment passes through the visible light generating device 10 at the vehicle speed of 95km/h-2The traffic flow of the vehicle is 30, and a traffic accident happens at the position 5km ahead. Visible light communication device 20-1The updated cumulative traffic flow is 31.
Visible light communication device 20-1Acquiring real-time data of the vehicle-mounted equipment and information contained in the visible light signal 501, and if the current speed of the vehicle-mounted equipment is determined to exceed the specified speed limit, reading prompt data of' your current speed per hour is 110km/h, and youWhen the vehicle is overspeed, a traffic accident happens at the position 5km ahead, the vehicle is required to avoid, the distance between the vehicle and the front vehicle is about 7.9km, and the traffic flow is 31'. Meanwhile, the visible light communication device 20-1Can generate visible light to the device 10-2Sending a visible light signal 502, the visible light signal 502 may include a time t212:05, the speed of the vehicle is 110km/h, and the traffic flow is 31. The visible light signal 502 may also include information that there is a traffic accident 5km ahead.
Visible light generating device 10-2Receiving the visible light signal 502, updating the relevant signal interval of the visible light signal 501, and generating a new visible light signal 501 comprising a service area with the front 1km, a speed limit of 100km/h and a time t2The speed is 12:05, the speed is 110km/h, the traffic flow is 31, and a traffic accident happens in the front 5 km.
Visible light communication device 20-2Passes through the visible light generating device 10-2Receiving visible light generating device 10-2Sending a new visible light signal 501, which comprises a service area 1km ahead, a speed limit of 100km/h and a time t2The speed is 12:05, the speed is 110km/h, the traffic flow is 31, and a traffic accident happens in the front 5 km. Visible light communication device 20-2According to the communication device 20 with visible light-1In the same analysis manner, after the current real-time road condition is obtained, the current real-time road condition is sent to the visible light generating device 10-2A new visible light signal 502 is sent. Each visible light generating device provided by the embodiment of the application can communicate with the adjacent visible light generating device. For example, suppose the visible light generating apparatus 10-4And a visible light generating device 10-25km apart, visible light generating device 10-4Receiving visible light communication device 20-1If the transmitted visible light signal 502 identifies that the current road condition indicated by the visible light signal 502 is that the traffic accident has been resolved, the visible light generating device 10-4To adjacent visible light generating devices 10-3And sending a visible light signal 503, or sending an updated visible light signal 501, wherein the visible light signal 501 comprises a third signal section for indicating that the traffic accident is solved. The following visible light generating devices will all receive the resolved traffic accident and the visible light communication devices passing through these visible light generating devices will also receive the information。
On the basis of the above embodiments, the embodiments of the present application further provide a visible light generating method. Referring to fig. 6, fig. 6 illustrates a method for generating visible light according to an embodiment of the present disclosure. The method is performed by any one of the visible light generating apparatuses 10. The method comprises the following steps:
601, receiving a first visible light signal sent by the vehicle-mounted equipment passing through the current visible light generating device and a second visible light signal sent by other visible light generating devices adjacent to the current visible light generating device;
and step 604, generating a third visible light signal according to the modulation signal drive.
According to the embodiment of the application, the traffic sign information is provided for the vehicle-mounted equipment in a visible light mode through the visible light generating device, and meanwhile, the road information is updated through receiving a live path of the vehicle-mounted equipment, so that traffic accidents are effectively reduced or avoided, and the traffic safety is improved.
Further, the present application also provides an execution method of a visible light communication device of an on-board device, please refer to fig. 7, and fig. 7 shows a flowchart of a visible light communication method provided in an embodiment of the present application. As shown in fig. 7, the method includes:
step 701, receiving a third visible light signal generated by the visible light generating apparatus 10 as described in fig. 1;
and 703, analyzing the second electric signal to generate prompt data, wherein the prompt data is used for prompting a driver of the vehicle-mounted equipment.
For a clearer understanding of the visible light communication method provided by the embodiments of the present application, please refer to fig. 8, and fig. 8 shows the visible light provided by the embodiments of the present applicationA flow diagram of a communication method. The method generates a visible light from a device 10-1Is interactively operated with a visible light communication device 20, the visible light communication device 20 passes through the visible light generating device 10-1The method comprises the following steps:
at step 808, the visible light communication device 20 parses the second electrical signal to generate the prompt data.
Wherein the visible light generating device 10-1And 10-2May be located along dangerous road sections or traffic sections where the visible light generating device 10 needs to be placed. The visible light communication device 20 may be mounted on an in-vehicle apparatus.
Understanding of the above embodiments, it should be noted that while the operations of the disclosed methods are depicted in the drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Rather, the steps depicted in the flowcharts may change the order of execution. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
In addition, it should be noted that the units or modules recited in the devices 10 or 20 correspond to the various steps in the methods described with reference to fig. 6 or 7. Thus, the operations and features described above for the method are equally applicable to the apparatus 10 or 20 and the units contained therein and will not be described again here. The apparatus 10 or 20 may be implemented in a browser or other security applications of the electronic device in advance, or may be loaded into the browser or other security applications of the electronic device by downloading or the like. The corresponding units in the apparatus 10 or 20 may cooperate with units in the electronic device to implement the solution of the embodiments of the present application.
The division into several modules or units mentioned in the above detailed description is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (11)
1. A visible light generating apparatus, comprising:
a first optical signal conversion unit for converting a first visible light signal and a second visible light signal into a first electrical signal, the first visible light signal being transmitted through a visible light communication device of the visible light generation device, the second visible light signal being transmitted by another visible light generation device adjacent to the visible light generation device;
the first modulation unit is used for generating a first part of modulation data according to the first electric signal and combining the first part of modulation data and a second part of modulation data stored in advance to generate a modulation signal;
and the first visible light generating unit is used for driving and generating a third visible light signal according to the modulation signal.
2. The visible light generating apparatus according to claim 1, wherein the first portion of the modulation data includes real-time data corresponding to the first visible light signal and warning data corresponding to the second visible light signal, the real-time data is used for indicating a current real-time motion state of the vehicle-mounted device, and the warning data is used for indicating a current actual condition of a road;
the second part of modulation data comprises road prompting data which is fixedly arranged.
3. The visible light generating apparatus according to claim 1, further comprising:
and the solar energy conversion device is used for converting solar energy into electric energy so as to provide energy for the visible light generation device.
4. The visible light-generating apparatus of claim 1, wherein the visible light-generating apparatus is a solar floor light.
5. A visible light communication apparatus, characterized in that the visible light communication apparatus is used for an in-vehicle device, the apparatus comprising at least:
an optical signal receiving unit for receiving a third visible light signal generated by the visible light generating apparatus according to any one of claims 1 to 4;
a second optical signal conversion unit for converting the third visible light signal into a second electrical signal;
and the processing unit is used for analyzing the second electric signal to generate prompt data, and the prompt data is used for prompting a driver of the vehicle-mounted equipment.
6. The visible light communication device of claim 5, further comprising:
the data acquisition unit is used for acquiring real-time data of the vehicle-mounted equipment;
the processing unit is further used for calculating distance data and current traffic flow data between the vehicle-mounted equipment and the previous vehicle-mounted equipment according to the real-time data corresponding to the first visible light signal in the real-time data and the first part of modulation data, and generating intersection judgment data according to the real-time data and the second part of modulation data; and generating the prompt data according to the distance data, the current traffic flow data, the traffic regulation judgment data and the alarm data corresponding to the second visible light signal in the first part of modulation data.
7. The visible light communication device of claim 5, further comprising:
and the second visible light generating unit is used for generating a first visible light signal according to the real-time data of the vehicle-mounted equipment.
8. A visible light communication system, comprising:
the visible light generating apparatus according to any one of claims 1 to 4;
the visible light communication device of any one of claims 5-7.
9. A method of visible light generation, the method comprising:
receiving a first visible light signal sent by the vehicle-mounted equipment of the current visible light generating device and a second visible light signal sent by other visible light generating devices adjacent to the current visible light generating device;
converting the first visible light signal and the second visible light signal into a first electrical signal;
generating a first part of modulation data according to the first electric signal, and combining the first part of modulation data and a second part of modulation data stored in advance to generate a modulation signal;
and driving to generate a third visible light signal according to the modulation signal.
10. A visible light communication method, characterized in that the method comprises at least:
receiving a third visible light signal generated by the visible light generating device of any one of claims 1-4;
converting the third visible light signal into a second electrical signal;
and analyzing the second electric signal to generate a control signal, wherein the control signal is used for driving a prompting unit to read prompting data, and the prompting data is used for prompting a driver of the vehicle-mounted equipment.
11. A visible light communication method, comprising:
the visible light generating device receives a first visible light signal sent by a visible light communication device passing through the visible light generating device and a second visible light signal sent by other adjacent visible light generating devices, converts the first visible light signal and the second visible light signal into a first electric signal, generates first part modulation data according to the first electric signal, and combines the first part modulation data and a pre-stored second part modulation data to generate a modulation signal; and driving to generate a third visible light signal according to the modulation signal;
the visible light communication device receives the third visible light signal, converts the third visible light signal into a second electric signal, and analyzes the second electric signal to generate prompt data, wherein the prompt data is used for prompting a driver of the vehicle-mounted equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910937529.9A CN110649971A (en) | 2019-09-29 | 2019-09-29 | Visible light generation and communication method and device and visible light communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910937529.9A CN110649971A (en) | 2019-09-29 | 2019-09-29 | Visible light generation and communication method and device and visible light communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110649971A true CN110649971A (en) | 2020-01-03 |
Family
ID=68993231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910937529.9A Pending CN110649971A (en) | 2019-09-29 | 2019-09-29 | Visible light generation and communication method and device and visible light communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110649971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113724516A (en) * | 2020-05-25 | 2021-11-30 | 苏州中明光电有限公司 | System for transmitting emergency traffic events |
| CN113724515A (en) * | 2020-05-25 | 2021-11-30 | 苏州中明光电有限公司 | System for transmitting emergency traffic events by using street lamps |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714898A (en) * | 2002-10-24 | 2010-05-26 | 株式会社中川研究所 | Illumination light communication device |
| CN102610115A (en) * | 2012-03-09 | 2012-07-25 | 郭丰亮 | Intelligent traffic system based on light emitting diode (LED) visible light communication |
| CN104167101A (en) * | 2014-08-04 | 2014-11-26 | 西安文理学院 | LED optical communication system arranged between traffic light with information issue function and mobile vehicle body |
| CN203982581U (en) * | 2014-08-01 | 2014-12-03 | 西安文理学院 | Traffic system based on LED optical communication technique |
| US20180198523A1 (en) * | 2017-01-06 | 2018-07-12 | Boe Technology Group Co., Ltd. | Vehicle-mounted visible light emission systems and reception systems, and communication networks |
| CN108847887A (en) * | 2018-05-31 | 2018-11-20 | 佛山市艾温特智能科技有限公司 | A kind of LIFI communication means, readable storage medium storing program for executing and a kind of car-mounted terminal |
| CN109147391A (en) * | 2018-09-06 | 2019-01-04 | 南京邮电大学 | Based on visible light communication intelligent transportation system and alarm method and spacing keeping method |
| CN109644052A (en) * | 2016-09-30 | 2019-04-16 | 英特尔公司 | Data processing and certification to optic communication source |
-
2019
- 2019-09-29 CN CN201910937529.9A patent/CN110649971A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714898A (en) * | 2002-10-24 | 2010-05-26 | 株式会社中川研究所 | Illumination light communication device |
| CN102610115A (en) * | 2012-03-09 | 2012-07-25 | 郭丰亮 | Intelligent traffic system based on light emitting diode (LED) visible light communication |
| CN203982581U (en) * | 2014-08-01 | 2014-12-03 | 西安文理学院 | Traffic system based on LED optical communication technique |
| CN104167101A (en) * | 2014-08-04 | 2014-11-26 | 西安文理学院 | LED optical communication system arranged between traffic light with information issue function and mobile vehicle body |
| CN109644052A (en) * | 2016-09-30 | 2019-04-16 | 英特尔公司 | Data processing and certification to optic communication source |
| US20180198523A1 (en) * | 2017-01-06 | 2018-07-12 | Boe Technology Group Co., Ltd. | Vehicle-mounted visible light emission systems and reception systems, and communication networks |
| CN108847887A (en) * | 2018-05-31 | 2018-11-20 | 佛山市艾温特智能科技有限公司 | A kind of LIFI communication means, readable storage medium storing program for executing and a kind of car-mounted terminal |
| CN109147391A (en) * | 2018-09-06 | 2019-01-04 | 南京邮电大学 | Based on visible light communication intelligent transportation system and alarm method and spacing keeping method |
Non-Patent Citations (1)
| Title |
|---|
| 徐第等人: "《简明电气设备工程安装手册》", 30 January 2006, 中国环境科学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113724516A (en) * | 2020-05-25 | 2021-11-30 | 苏州中明光电有限公司 | System for transmitting emergency traffic events |
| CN113724515A (en) * | 2020-05-25 | 2021-11-30 | 苏州中明光电有限公司 | System for transmitting emergency traffic events by using street lamps |
| CN113724515B (en) * | 2020-05-25 | 2023-08-11 | 苏州中明光电有限公司 | System for transmitting emergency traffic event by using street lamp |
| CN113724516B (en) * | 2020-05-25 | 2023-08-11 | 苏州中明光电有限公司 | System for transmitting emergency traffic event |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7961086B2 (en) | System and method for vehicular communications | |
| US20080122607A1 (en) | System and Method for Vehicular Communications | |
| US20070242339A1 (en) | System and Method for Vehicular Communications | |
| US20080122606A1 (en) | System and Method for Vehicular Communications | |
| US7383121B2 (en) | Optical communication equipment and vehicle control method | |
| US20110196580A1 (en) | Wireless traffic information indicating method and system | |
| CN107757534B (en) | Communication method, device and system for automatic driving fleet | |
| US20070242338A1 (en) | System and Method for Vehicular Communications | |
| CN103794044A (en) | Traffic control method and system combining car networking and follow running conversion | |
| CN107808514B (en) | Communication method and device for automatic driving fleet | |
| CN110649971A (en) | Visible light generation and communication method and device and visible light communication system | |
| CN109649277A (en) | The precious system of wisdom driving and application method | |
| US20200286373A1 (en) | In-vehicle active traffic management information system (ivatmis) | |
| JP2012256235A (en) | Information providing device for driving support, on-vehicle driving support device and driving support system | |
| CN113724515B (en) | System for transmitting emergency traffic event by using street lamp | |
| KR101928295B1 (en) | System and method for preventing unexpected vehicle accident adapting light fidelity and transport protocol expert group technologies | |
| US11254261B2 (en) | Method for forming an emergency lane on a multi-lane road and transportation vehicle having an apparatus for carrying out the method | |
| CN113034950A (en) | Intelligent driving method and system | |
| CN111785061A (en) | Traffic signal method and system based on two-dimensional code | |
| CN110555995A (en) | Smart city bad sight distance vehicle meeting early warning system based on Internet of vehicles | |
| CN115376320A (en) | Accurate warning method for intersection without lamp control | |
| JP2008027067A (en) | Information providing apparatus using led light emitting device, and vehicle control apparatus | |
| DE1814683A1 (en) | Traffic signaling or display system | |
| KR100939578B1 (en) | System and method for providing traffic information | |
| JP2010277243A (en) | Safe driving support system and in-vehicle device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200103 |
|
| RJ01 | Rejection of invention patent application after publication |